1. What is the Sand for Block Paving Calculation?

The sand calculation estimates the amount of sand needed for block paving bedding. Proper sand quantity is crucial for stable and level paving installation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Area \) — Paving area in square meters
• \( Depth \) — Bedding layer depth in meters
• \( 1600 \) — Density of sharp sand (kg/m³)

Explanation: The calculation accounts for the volume of sand needed and converts it to weight using standard density.

3. Importance of Accurate Sand Calculation

Details: Correct sand quantity ensures proper compaction, drainage, and stability of block paving. Too little sand leads to uneven surfaces, while too much can cause shifting.

4. Using the Calculator

Tips: Measure your paving area accurately in square meters. Typical bedding depth is 0.03-0.05m (30-50mm). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What type of sand should I use?
A: Use sharp sand or concrete sand (not building sand) for block paving bedding as it provides better stability.

Q2: How deep should the sand layer be?
A: Typically 30-50mm (0.03-0.05m) after compaction, depending on project requirements.

Q3: Should I account for compaction?
A: This calculation gives uncompacted volume. You may need 10-20% extra to account for compaction.

Q4: What if my area isn't rectangular?
A: Break irregular shapes into smaller rectangles, calculate each separately, then sum the results.

Q5: Does this include jointing sand?
A: No, this calculates only bedding sand. Jointing sand is typically 1kg per 1m² of paving.